武汉城市森林空气环境效应研究——以九峰国家森林公园为例
Effect of Seasonal Variation on Air Environment Quality of Typical Forest in Suburban Wuhan:A Case of Jiufeng National Forest Park
黄发新 1胡文杰 2崔鸿侠 2王晓荣 2潘磊 2王祥3
作者信息
- 1. 湖北省林业科学研究院 武汉 430075
- 2. 湖北省林业科学研究院 武汉 430075;湖北神农架森林生态系统国家定位观测研究站 神农架 442421
- 3. 荆门市十里牌林场 荆门 448000
- 折叠
摘要
为探究城市森林空气环境的变化规律,以九峰国家森林公园为研究对象,以空气负离子浓度为主要监测指标,同步监测空气温、湿度,空气颗粒物浓度等,阐明其季节性变化规律,探索影响空气负离子浓度的主要因素.结果表明:森林环境可以显著改善空气温度、湿度,春季和秋季各林分的林内环境均达到"体感舒适"等级;与对照相比,各林分类型对PM1.0、PM2.5和PM10有明显净化效果,其中秋季林分净化率高于夏季,春季最低,针叶+常绿阔叶林的颗粒物净化率相对较高;空气负离子浓度总体表现为夏季＞春季＞秋季,春季和秋季各林分空气负离子浓度的峰值出现时间主要集中在16:00,夏季则是在10:00;影响空气负离子浓度的主要因素在不同季节存在差异,各类型颗粒物浓度、天空开阔度在各季节均与负离子浓度呈极显著或显著负相关关系;空气负离子浓度在春季与空气湿度呈显著正相关,在夏季与树高呈显著正相关,在秋季则与空气温度、叶面积指数和树高表现出显著正相关关系.
Abstract
In order to explore the changes of urban forests air environment,Jiufeng National Forest Park in Wuhan City was taken as the research object,and air negative ion concentration was taken as the main monitoring index to simultane-ously monitor air temperature,humidity,and air particle concentration,etc.,clarify their seasonal change rules,and ex-plore the main factors affecting air negative ion concentration.The results showed that the forest environment could sig-nificantly improve the air temperature and humidity,and the environment of each forest type reached the"body comfort-able"grade in spring and autumn.Compared with the control,each forest type had obvious purifying effect on PM1,PM2.5 and PM10.The rate of particulate matter clearance in autumn was higher than that in summer,and the lowest was in spring.In each season,the particulate clearance rate of coniferous and evergreen broad-leaved forest was higher.The air negative ions concentration presented that summer＞spring＞autumn,and the peak time of negative ion concentration in spring and autumn was mainly focused at 16:00,and it was at 10:00 in summer.There were seasonal differences in the main factors affecting the air negative ions concentration.The concentration of each particulate type matter and canopy sky openness were extremely significantly or significantly negatively correlated with the negative ions concentration in each season.In addition,the air negative ions concentration was significantly positively correlated with air humidity in spring and with tree height in summer.In autumn,it was positively correlated with air temperature,leaf area index and tree height.
关键词
森林公园/体感指数/颗粒物浓度/空气负离子浓度/季节性影响因素Key words
forest park/the human body comfort index/concentration of particulate matter/the air negative ions concen-tration/seasonal influencing factors引用本文复制引用
出版年
2024
NETL
NSTL
万方数据